英文關鍵字
alloy
automated
automotive
blue
board
bobbin
bronzed
cable
car
chemical
closeup
construction
conveyor
copper
creel
department
equipment
factory
heavy
industry
line
machine
manufacture
manufacturing
mechanism
metal
modern
move
movement
plant
process
produce
production
reel
reinforcement
rim
ring
robot
roll
rotate
rubber
section
spin
spool
stack
steel
thread
tire
tyre
vehicle
wire